What was found
DURING CRUISE FLT, FL 320, NR 1 IDG FAULTED, NR 1 GENERATOR OFF AND AC BUSS 1 FAILED. DOUBLE FAILURE OF GENERATOR 1 AND AC BUSS 1. FOLLOWED ECAM AND QRH, UNABLE TO RECOVER EQUIPMENT ON AC BUSS NR 1. REMOVED AND REPLACED NR 1 ENGINE IDG IAW AMM 24-11-11-04-01. OPS AND LEAK CHECKED GOOD.